Join Date: Nov 2009
Location: georgia's toe-nails of the foot hills
Re: Blown up!!! Replace 20hp Kohler with a 25??
Neither is a 'direct replacement' for the CV. Both will need fuel, control, exhaust and perhaps PTO 'adjustments'.
Were I looking, I'd try for another CV that would be a 'bolt-in' replacement. Stated from the point of view of wanting it to work just the same as before. Locally, there were several Kohler CV powered lawn implements on c-list recently. Complete machines. There are also a few posters who intermittently make posts showing yards-full of used machinery, sometimes stacked 6' high. They are out there.
The Predator engines have a very good reliability reputation from all I have heard. One of their 20-22hp models (H & V are different) should fit under hood, but you would have to rig the above items. If you search youtube for 'backyard machinist'(IIRC), he re-powered a zero turn with a Predator, which cut in the 50"-range, and he seemed very pleased. If I had a need, they would certainly be on my list. But I have a 42" and don't need that much hp or torque. I don't plow, nor scrape, nor till, and don't tow much of anything. Just mow. I can hear the CV open the throttle sometimes, but mostly it is loafing.(IMO). I do not have a 'lawn', I have green stuff growing. It cuts pretty evenly, and looks fine to me.
simplificate & add lightness
It's not how hard you work, it's how much you get done.